Two-Way Relay Selection for Millimeter Wave Networks

In this letter, we investigate the potential benefits of deploying two-way amplify-and-forward relays to help bidirectional data exchange between two end users in a millimeter wave network. While the locations of the two end users are fixed, the locations of the potential relays are modeled as a homogeneous Poisson point process. A relay is thus selected to maximize the minimum of the two users' end-to-end signal-to-noise ratios. For this system, we derive the coverage probability and show that the considered relay selection significantly outperforms the random selection scheme in terms of coverage and spectral efficiency.